Opera (web browser)
Opera is a multi-platform web browser developed by its namesake company Opera.[9][10][11] The browser is based on Chromium, but distinguishes itself from other Chromium-based browsers (Chrome, Edge, etc.) through its user interface and other features.
Opera 82 displaying the Wikipedia main page on Windows 11 | |
| Developer(s) | Opera |
|---|---|
| Initial release | 10 April 1995[1] |
| Stable release | 94.0.4606.65[2] / 12 January 2023 |
| Preview release |
95.0.4635.15 (January 18, 2023[3][4])
|
| Written in | C++[7] |
| Engines | Blink (formerly Presto), V8 |
| Operating system | Windows 7 or later,[8] macOS, Linux, (Formerly FreeBSD, Nintendo Wii, and Nintendo DSi) |
| Available in | 42 languages |
| Type | Web browser |
| License | Freeware |
| Website | www |
Opera was initially released on 10 April 1995, making it one of the oldest desktop web browsers still actively developed. It was commercial software for its first ten years and had its own proprietary layout engine, Presto. In 2013, it switched from the Presto engine to Chromium.
Opera is available on Windows, macOS, Linux, Android, and iOS (Safari WebKit engine).[12][13] There are also mobile versions called Opera Mobile[14][15] and Opera Mini.[16][17] Opera users also have access to Opera News, a news app based on an AI platform.[18]
The company released a gaming-oriented version of the browser, Opera GX, in 2019,[19] and a blockchain-focused Opera Crypto Browser into public beta in January 2022.[20]
History
In 1994, Jon Stephenson von Tetzchner and Geir Ivarsøy started developing the Opera web browser while working at Telenor, a Norwegian telecommunications company.[21][22]
In 1995, they founded Opera Software AS.[23] Opera was initially released on 10 April 1995, and then it was released publicly in 1996 with version 2.10,[24] which ran on Microsoft Windows 95.[25] Development for mobile device platforms started in 1998.[26]
Opera 4.0, released in 2000,[24] included a new cross-platform core that facilitated the creation of editions of Opera for multiple operating systems and platforms.[27]
To this point, Opera was trialware and had to be purchased after the trial period. With version 5.0, released in 2000, Opera became ad-sponsored, displaying ads to users who had not paid for it.[28] Subsequent versions have given users the choice of seeing banner ads or targeted text ads from Google.
With version 8.5, released in 2005, the ads were completely removed, and the browser's primary financial support came through revenue from Google (by contract, Opera's default search engine).[29]
Among new features introduced in version 9.1, released in 2006, was fraud protection using technology from GeoTrust, a digital certificate provider, and PhishTank, an organization that tracks known phishing web sites.[30] This feature was further expanded in version 9.5, when GeoTrust was replaced with Netcraft, and malware protection from Haute Secure was added.[31]
In 2006, Opera Software ASA was released as well as Internet Channel and Nintendo DS Browser for Nintendo's DS and Wii gaming systems.[32][33][34][35]
A new JavaScript engine, called Carakan (after the Javanese alphabet), was introduced with version 10.50.[36] According to Opera Software, it made Opera 10.50 more than seven times faster in SunSpider than Opera 10.10.[37][38][39]
On 16 December 2010, Opera 11 was released, featuring extensions,[40] tab stacking (where dragging one tab over another allowed creating a group of tabs), visual mouse gestures and changes to the address bar.[41] Opera 12 was released on 14 June 2012.[42]
On 12 February 2013, Opera Software announced that it would drop its own Presto layout engine in favour of WebKit as implemented by Google's Chrome browser, using code from the Chromium project. Opera Software planned as well to contribute code to WebKit.[43] On 3 April 2013, Google announced it would fork components from WebKit to form a new layout engine, Blink. That day, Opera Software confirmed it would follow Google in implementing Blink.[44]
On 28 May 2013, a beta release of Opera 15 was made available,[45] the first version based on the Chromium project.[46][47] Many distinctive Opera features of the previous versions were dropped, and Opera Mail was separated into a standalone application derived from Opera 12.[48]
Acquisition by Chinese consortium
In 2016, the company changed ownership when a group of Chinese investors purchased the web browser, the consumer business, and the Opera Software ASA brand. On 18 July 2016, Opera Software ASA announced it had sold its browser, privacy and performance apps, and the Opera brand to Golden Brick Capital Private Equity Fund I Limited Partnership, a consortium of Chinese investors.[49][50]
In January 2017, the source code of Opera 12.15, one of the last few versions still based on the Presto layout engine, was leaked.[51]
To demonstrate how radically different a browser could look, Opera Neon, dubbed a "concept browser," was released in January 2017. PC World compared it to demo models that automakers and hardware vendors release to show their visions of the future. Instead of a Speed Dial (also explained in the following chapter, "Features"), it displays the frequently accessed websites in resemblance to a desktop with computer icons scattered over it in an artistic formation.[52][53]
Features
Opera has originated features later adopted by other web browsers, including: Speed Dial, pop-up blocking, reopening recently closed pages, private browsing, and tabbed browsing.[54][55] Additional features include a built-in screenshot tool, Snapshot, which also includes an image-markup tool;[56] built-in ad blockers, and tracking blockers.[57]
Built-in messengers
Opera’s desktop browser includes access to social media messaging apps WhatsApp, Telegram, Facebook Messenger, Twitter, Instagram, TikTok, and VK.[58][59]
Usability and accessibility
Opera includes a bookmarks bar and a download manager. It also has "Speed Dial" which allows the user to add an unlimited number of pages shown in thumbnail form in a page displayed when a new tab is opened.[54][55][60]
Opera was one of the first browsers to support Cascading Style Sheets (CSS) in 1998.[61]
Opera Turbo, a feature that compresses requested web pages (except HTTPS pages) before sending them to the users,[62] is no longer available on the desktop browser. Opera Turbo is available in Opera Mini, the mobile browser.[63]
Privacy and security
One security feature is the option to delete private data, such as HTTP cookies, browsing history, items in cache and passwords with the click of a button.[64]
When visiting a site, Opera displays a security badge in the address bar which shows details about the website, including security certificates.[65] Opera's fraud and malware protection warns the user about suspicious web pages and is enabled by default. It checks the requested page against several databases of known phishing and malware websites, called blacklists.[65]
In 2016, a free virtual private network (VPN) service was implemented in the browser.[66] Opera said that this would allow encrypted access to websites otherwise blocked, and provide security on public WiFi networks.[67][68] It was later determined that the browser VPN operated as a web proxy rather than a VPN, meaning that it only secured connections made by the browser and not by any other apps on the computer.[69]
Crypto wallet support
In 2018, a built-in cryptocurrency wallet to the Opera Web Browser was released,[70] announcing that they would be the first browser with a built-in Crypto Wallet.[71] On 13 December 2018, Opera released a video showing many decentralized applications like Cryptokitties running on the Android version of the Opera Web Browser.[72]
In March 2020, Opera updated its Android browser to access crypto domains, making it the first browser to be able to support a domain name system (DNS) which is not part of the traditional DNS directly without the need of a plugin or add-on.[73] This was through a collaboration with a San Francisco based startup, Unstoppable Domains.[74][75]
In January 2022, Opera introduced Opera Crypto Browser into public beta, combining a non-custodial wallet with a dedicated browser for blockchain enabled services and Web3 technologies.[76] On April 14 2022, Opera launched its Crypto Browser available on iOS devices.[77]
Other versions
Opera GX
| A screenshot of Opera GX on macOS Mojave | |
| Developer(s) | Opera Poland |
|---|---|
| Initial release | 11 June 2019 |
| Stable release(s) | |
| Engines | Blink, V8 |
| Operating system | Microsoft Windows macOS Beta: iOS Android |
| Type | Web browser |
| License | Freeware |
| Website | www |
Opera GX is a gaming-oriented counterpart of Opera. The browser was announced and released in early access for Windows on 11 June 2019, during E3 2019. The macOS version was released in December of the same year.[81][82]
Opera GX adds features geared towards gamers on top of the regular Opera browser. The browser allows users to limit network, CPU, and memory usage to preserve system resources, with GX Cleaner, a tool that allows users to clear cache, cookies, and other junk. It also adds integrations with other apps such as Twitch, Discord, Twitter, and Instagram. The browser also has a built-in page called the GX Corner, which collates gaming-related releases, deals, and news articles.[83][84][85]
On 20 May 2021, Opera released a mobile version of Opera GX on iOS and Android.[86]
Development stages
Opera Software uses a release cycle consisting of three "streams," corresponding to phases of development, that can be downloaded and installed independently of each other: "developer," "beta," and "stable." New features are first introduced in the developer build, then, depending on user feedback, may progress to the beta version and eventually be released.[87]
The developer stream allows early testing of new features, mainly targeting developers, extension creators, and early adopters. Opera developer is not intended for everyday browsing as it is unstable and is prone to failure or crashing, but it enables advanced users to try out new features that are still under development, without affecting their normal installation of the browser. New versions of the browser are released frequently, generally a few times a week.[88]
The beta stream, formerly known as "Opera Next," is a feature complete package, allowing stability and quality to mature before the final release. A new version is released every couple of weeks.[89]
Both streams can be installed alongside the official release without interference. Each has a different icon to help the user distinguish between the variants. [90]
Market adoption
Integrations
In 2005, Adobe Systems integrated Opera's rendering engine, Presto, into its Adobe Creative Suite applications. Opera technology was employed in Adobe GoLive, Adobe Photoshop, Adobe Dreamweaver, and other components of the Adobe Creative Suite.[92][93] Opera's layout engine is also found in Virtual Mechanics SiteSpinner Pro.[94] The Internet Channel is a version of the Opera 9 web browser for use on the Nintendo Wii created by Opera Software and Nintendo.[95] Opera Software is also implemented in the Nintendo DS Browser for Nintendo's handheld systems.
Opera is the fifth most popular web browser.[96][97] As of April 2021, Opera's offerings had over 320 million active users.[98]
Reception
The Opera browser has been listed as a "tried and tested direct alternative to Chrome."[99] It scores close to Chrome on the HTML5test, which scores browsers’ compatibility with different web standards.[97]
Versions with the Presto layout engine have been positively reviewed,[100][101][102] although they have been criticized for website compatibility issues.[103][104] Because of this issue, Opera 8.01 and higher had included workarounds to help certain popular but problematic web sites display properly.[105][106]
Versions with the Blink layout engine have been criticized by some users for missing features such as UI customization, and for abandoning Opera Software's own Presto layout engine.[107][108][109][110] Despite that, versions with the Blink layout engine have been noted for being fast and stable, for handling the latest web standards and for having a better website compatibility and a modern-style user interface.[111][112][113]
See also
Opera browser platform variants:
- Opera Mini: a browser for tablets and telephones
- Opera Mobile: a browser for tablets and telephones
Related other browsers:
- Otter Browser: an open-source browser that recreates some aspects of the classic Opera
- Vivaldi: a freeware browser created by former Opera Software employees
Related topics:
References
- ^ . Opera Software. 21 February 2012. Archived from the original on 23 October 2014. Retrieved 21 February 2012.
- ^ "Opera 94.0.4606.65 Stable update". 12 January 2023. Retrieved 13 January 2023.
- ^ "Thanks for downloading Opera". Opera Norway. Retrieved 19 January 2023.
- ^ "Index of /ftp/pub/opera-beta/95.0.4635.15/". 18 January 2023. Retrieved 19 January 2023.
- ^ "Thanks for downloading Opera". Opera Norway. Retrieved 11 January 2023.
- ^ "Opera 96.0.4660.0 developer update - Blog | Opera Desktop". Opera Norway. Retrieved 11 January 2023.
- ^ Lextrait, Vincent (July 2010). "The Programming Languages Beacon, v10.3". Archived from the original on 30 May 2012. Retrieved 11 June 2014.
- ^ "Opera system requirements". Opera Software. Retrieved 22 March 2018.
- ^ "About Opera - Innovation is our game - Opera". www.opera.com.
- ^ "Opera Limited American Depositary Shares (OPRA)". NASDAQ.com.
- ^ "Chinese consortium buys Opera browser for $600 mn". phys.org. Retrieved 23 April 2019.
- ^ "Opera Touch is a solid alternative to Safari on the iPhone". TechCrunch. 2 October 2018. Retrieved 12 November 2020.
- ^ "Best web browser 2020: Chrome, Edge, Firefox, and Opera go head-to-head". PCWorld. 17 April 2020. Retrieved 12 November 2020.
- ^ "Opera is the oldest browser, and it is still surviving: Jon Tetzchner, founder, Opera software". The Economic Times. Retrieved 20 November 2020.
- ^ "Opera update uses QR codes to sync data between PC and Android browsers". Engadget. Retrieved 20 November 2020.
- ^ Brügger, Niels; Milligan, Ian (10 December 2018). The SAGE Handbook of Web History. SAGE. ISBN 978-1-5264-5546-8.
- ^ "Opera launches a new mobile browser". TechCrunch. 25 April 2018. Retrieved 20 November 2020.
- ^ "Opera News Sets a New Record With 200 Million Users". MarTech Series. 9 June 2020. Retrieved 14 January 2021.
- ^ "Opera GX | Gaming Browser | Opera". Opera.
- ^ "Opera Crypto Browser | Web3 Browser | Opera". Opera.
- ^ "From Norwegian research project to global multiplatform browser. Opera company profile". Adsider. 14 February 2020. Retrieved 1 October 2020.
- ^ Sengupta, Debjoy. "Opera is the oldest browser, and it is still surviving: Jon Tetzchner, founder, Opera software". The Economic Times. Retrieved 21 October 2020.
- ^ . Opera Software. Archived from the original on 3 December 2007. Retrieved 5 September 2010.
- ^ a b "Affiliated Organization of Firefox and Mozilla" (PDF). Mozilla Japan. Mozilla Foundation. 2006. Retrieved 5 September 2010.
- ^ . Opera Software. 2007. Archived from the original on 23 November 2007. Retrieved 13 January 2011.
- ^ "Can Opera Become to Mobile What Firefox has Become to the Computer?". Fast Company. 12 November 2008. Retrieved 21 October 2020.
- ^ Schenk, Mark (2010). "Opera browser version history". Retrieved 11 June 2014.
- ^ Lettice, John (6 December 2000). "Opera browser goes free with version 5.0 launch". The Register. Retrieved 11 June 2014.
- ^ Baker, Loren (20 September 2005). "Opera Goes Free with Help from Google". Search Engine Journal. Retrieved 11 June 2014.
- ^ Goldman, Daniel (18 December 2006). . Opera Watch. Archived from the original on 5 January 2007. Retrieved 11 June 2014.
- ^ Kleinhout, Huib (6 June 2008). . Opera Desktop Team. Opera Software. Archived from the original on 8 June 2008. Retrieved 11 June 2014.
- ^ "Giving gamers two windows to the Web: The Opera Browser for Nintendo DS" (Press release). Opera Software. 15 February 2006. Retrieved 11 June 2014.
- ^ "Nintendo DS Browser available to North American market" (Press release). Opera Software. 8 June 2007. Retrieved 11 June 2014.
- ^ "A Web Revolution in the Living room: Opera partners with Nintendo to put browser on the Wii game console" (Press release). Opera Software. 10 May 2006. Retrieved 11 June 2014.
- ^ "Play with the Web: Opera browser now available for download on Wii" (Press release). Opera Software. 22 December 2006. Retrieved 11 June 2014.
- ^ . Opera Software. 2 March 2010. Archived from the original on 30 March 2012. Retrieved 11 June 2014.
- ^ Mateu, Roberto (1 January 2010). . Opera Labs. Opera Software. Archived from the original on 24 December 2009. Retrieved 11 June 2014.
- ^ De, Pallab (22 December 2009). "Opera 10.5 Pre-Alpha Is Here and It Is Fast!". Techie-buzz.com. Archived from the original on 21 July 2012. Retrieved 11 June 2014.
- ^ Purdy, Kevin (22 December 2009). "Opera 10.5 Pre-Alpha is All About Speed (and Private Browsing)". Lifehacker. Gawker Media. Retrieved 11 June 2014.
- ^ Protalinski, Emil (21 October 2010). "Opera 11 alpha out: developers, start your extension engines". Ars Technica.
- ^ "Opera 11.00 for Windows changelog". Opera Software. Retrieved 11 June 2014.
- ^ "Opera 12.00 for Windows Changelog". Opera Software. 14 June 2012. Archived from the original on 8 September 2012. Retrieved 11 June 2014.
- ^ "Hey Presto, Opera switches to WebKit". Ars Technica. Condé Nast. 13 February 2013. Retrieved 4 April 2013.
- ^ "Google going its own way, forking WebKit rendering engine". Ars Technica. Condé Nast. 3 April 2013. Retrieved 4 April 2013.
- ^ . My.opera.com (28 May 2013). Retrieved on 21 July 2013.
- ^ . My.opera.com (28 May 2013). Retrieved on 21 July 2013.
- ^ The Chromium-Powered Opera Is Finally Here 8 August 2017 at the Wayback Machine. WebProNews (28 May 2013). Retrieved on 21 July 2013.
- ^ Standalone Opera Mail Client Coming to Linux. Omgubuntu.co.uk (28 May 2013). Retrieved on 21 July 2013.
- ^ "BRIEF-Opera Software says has closed $575 mln with China's Golden Brick". Reuters. 4 November 2016. Retrieved 22 July 2021.
- ^ "Opera renegotiates its $1.2B sale down to $600M for its browsers, privacy apps, Chinese JV". TechCrunch. 18 July 2016. Retrieved 22 July 2021.
- ^ Presto engine source code available on GitHub (2017)
- ^ Hachman, Mark (11 January 2017). "Meet Opera Neon, Opera's radical vision for the future of web browsers". PCWorld.
- ^ Muchmore, Michael (11 January 2017). "Opera Neon". PC Magazine.
- ^ a b . SlashGeek. Archived from the original on 6 October 2016. Retrieved 5 October 2016.
- ^ a b Reimer, Jeremy (1 September 2009). "First look: Opera 10 faster with new features". Ars Technica. Condé Nast. Retrieved 11 June 2014.
- ^ Salter, Jim (26 February 2020). "Ars takes the new Opera R2020 browser for a spin". Ars Technica. Retrieved 3 February 2021.
- ^ "Do you know who made that browser extension? Opera highlights how its VPN, ad-blocker are in-built". The Indian Express. 24 September 2020. Retrieved 3 February 2021.
- ^ "Opera has baked Twitter into its desktop browser". Engadget. Retrieved 22 December 2020.
- ^ "Opera's desktop browser now features quick access to Messenger, Whats App, and Telegram". TechCrunch. 10 May 2017. Retrieved 22 December 2020.
- ^ . Opera. Archived from the original on 23 October 2014. Retrieved 29 February 2016.
Opera has a history of introducing new features long before they become mainstream, and often failing to receive credit for doing so. Opera was the first browser to [...]
- ^ Meyer, Eric (June 1999). "CSS: If not now, when?". meyerweb.com. Retrieved 11 June 2014.
- ^ "Opera's company FAQ". Opera Software. Retrieved 12 June 2014.
- ^ "The best browser 2021". TechRadar. Retrieved 27 January 2021.
- ^ "Help, Be safe and private". Opera Software. Retrieved 12 June 2014.
- ^ a b "Security and privacy".
- ^ "Free VPN". Opera.com. Retrieved 18 March 2017.
- ^ . Opera VPN. 2017. Archived from the original on 28 March 2017. Retrieved 18 March 2017.
- ^ Opera Settings > VPN: "Enabling VPN will disable Opera Turbo"
- ^ Williams, Mike (12 June 2020). "Opera VPN review". TechRadar. Retrieved 11 November 2021.
- ^ "The Opera browser for Android with built-in Crypto Wallet - OPERA - BROWSER". YouTube.
- ^ "Opera introduces first browser with built-in Crypto Wallet - Opera". archive.is. 14 December 2018. Archived from the original on 14 December 2018.
- ^ "The Opera browser for Android with built-in Crypto Wallet - OPERA - BROWSER" – via www.youtube.com.
- ^ at 07:04, Kieren McCarthy in San Francisco 31 Mar 2020. "Sucks to be you, ICANN. We can go our own way: Opera to support sites using renegade top-level domain .crypto". www.theregister.co.uk. Retrieved 28 April 2020.
- ^ "Unstoppable Domains Partners With Opera Browser to Integrate Decentralized Websites". www.businesswire.com. 30 March 2020. Retrieved 28 April 2020.
- ^ "Unstoppable Domains". Unstoppable Domains. Retrieved 28 April 2020.
- ^ "Opera Crypto Browser Project Web3 2021". Opera.com. 19 January 2022.
- ^ "Opera has launched the iOS version of their Crypto Browser". TechCrunch. 15 April 2022. Retrieved 18 April 2022.
- ^ a b https://get.opera.com/ftp/pub/opera_gx/94.0.4606.69/; retrieved: 16 January 2023.
- ^ https://play.google.com/store/apps/details?id=com.opera.gx; retrieved: 21 January 2023.
- ^ https://apps.apple.com/us/app/opera-gx/id1559740799; retrieved: 12 December 2022.
- ^ Kastrenakes, Jacob (11 June 2019). "Opera made a 'gaming browser' that lets you control CPU usage". The Verge. Retrieved 7 May 2021.
- ^ "Opera GX gaming browser now available on macOS". SlashGear. 13 December 2019. Retrieved 8 May 2021.
- ^ "Opera GX Review". PCMAG. Retrieved 8 May 2021.
- ^ Hesse, Brendan (22 January 2021). "Is the Opera GX Browser Just for Gamers?". Lifehacker. Retrieved 7 May 2021.
- ^ "Opera GX gets built-in Instagram, workspaces to keep tabs organized". Windows Central. 19 May 2020. Retrieved 21 January 2021.
- ^ Kocemba, Maciej (20 May 2021). "Opera GX Mobile beta is here – Great News for Gamers on the Go". The Opera Blog. Retrieved 22 June 2021.
- ^ "What is Opera, Opera next, and Opera developer?". Opera Desktop Team Blog. Retrieved 16 September 2014.
- ^ . Opera Software. Archived from the original on 17 June 2016. Retrieved 20 November 2013.
- ^ . Opera Software ASA. Archived from the original on 19 October 2019. Retrieved 9 November 2014.
- ^ . Archived from the original on 7 December 2016. Retrieved 2 May 2022.
- ^ "Desktop & Tablet Browser Market Share Worldwide Jan 2022". statcounter Global Stats. Retrieved 28 February 2022.
- ^ "Powered by Opera: Opera Integrated with Adobe Creative Suite 2" (Press release). Opera Software. 4 April 2005. Retrieved 11 June 2014.
- ^ Goldman, Daniel (3 May 2007). . Opera Watch. Archived from the original on 11 November 2007. Retrieved 11 June 2014.
- ^ (Press release). Virtual Mechanics Inc. 17 November 2008. Archived from the original on 9 January 2009. Retrieved 11 June 2014.
- ^ . support.nintendo.com. Archived from the original on 11 November 2011.
- ^ "Now Live With Latest Chrome, Firefox, Edge, and Opera Browsers". LambdaTest. 22 June 2020. Retrieved 10 February 2021.
- ^ a b "Chrome, Edge, Firefox, Opera, or Safari: Which Browser Is Best?". PCMAG. Retrieved 17 December 2020.
- ^ Opiah, Abigail (28 April 2021). "Opera upgrades user access to decentralized web via Unstoppable Domains". TechRadar. Retrieved 7 May 2021.
- ^ "Vivaldi, Opera, Brave: should you switch your browser?". www.technologymagazine.com. 17 May 2020. Retrieved 12 November 2020.
- ^ Stieben, Danny (24 May 2012). "5 Ideological Reasons Why You Should Try Opera". makeuseof.com. Retrieved 12 June 2014.
- ^ Mason, Wesley (16 March 2000). "Software Review: Opera browser for Windows v3.62". Geek.com. Archived from the original on 3 September 2012. Retrieved 6 September 2010.
- ^ Berger, Sandy (3 November 2004). . CompuKiss. Archived from the original on 12 November 2004. Retrieved 6 September 2010.
- ^ Altman, Tim (31 August 2007). . Opera Desktop Team. Opera Software. Archived from the original on 4 September 2007. Retrieved 6 September 2010.
- ^ Dotzler, Asa (4 September 2007). . Archived from the original on 20 October 2007. Retrieved 6 September 2010.
- ^ "Browser JavaScript Explained". Opera Software. Archived from the original on 6 September 2012. Retrieved 11 June 2014.
- ^ . Opera Software. Archived from the original on 18 June 2008. Retrieved 11 June 2014.
- ^ Harac, Ian (9 December 2013). "Opera 18 review: This browser's seen radical changes… perhaps too radical". PC World. IDG. Retrieved 12 June 2014.
- ^ Samson, Ted (3 July 2013). "Blink-based Opera 15 strikes a sour note with users". InfoWorld. IDG. Retrieved 29 July 2013.
- ^ Mathews, Lee (2 July 2013). . geek.com. Ziff Davis. Archived from the original on 13 July 2014. Retrieved 12 June 2014.
- ^ Keizer, Gregg (2 July 2013). "Opera 15 launches with WebKit backbone". Computer World. Retrieved 29 July 2013.
- ^ Le Bihan, Alan (26 May 2014). "A browser that's free, comprehensive and innovative". Softonic.com. Retrieved 12 June 2014.
- ^ Piccolomini, Pier Francesco (5 September 2013). "5 Alternatives to Internet Explorer". Softonic.com. Retrieved 12 June 2014.
- ^ Hughes, Matthew (6 August 2013). "Opera 15 Is A Faster, Simpler Chrome, And Here Are 3 Great Reasons To Try It". Makeuseof.com. Retrieved 12 June 2014.
External links
- Official website